Enhanced voltage conversion and reduced inductor size in a flying capacitor boost converter compared to conventional boost converter for photovoltaic systems

Almawlawe, Muhanad D. Hashim; Hamed Naji, Hassan; Al-Umari, Iyad Hamid A.; Wali, Musa Hadi

doi:10.30772/qjes.2024.152779.1354

	Enhanced voltage conversion and reduced inductor size in a flying capacitor boost converter compared to conventional boost converter for photovoltaic systems
Al-Qadisiyah Journal for Engineering Sciences
Article 2, Volume 17, Issue 4, December 2024, Pages 322-330 PDF (1.02 M)
Document Type: Research Paper
DOI: 10.30772/qjes.2024.152779.1354
Authors
Muhanad D. Hashim Almawlawe^* ; Hassan Hamed Naji; Iyad Hamid A. Al-Umari; Musa Hadi Wali
Department of Electronics and Communication, College of Engineering, University of Al-Qadisiyah, Al-Diwaniyah, Iraq.
Abstract
In photovoltaic (PV) systems, conventional boost converters (CBCs) face limitations at high-duty cycles, including low voltage conversion ratio (VCR), high voltage stress, and reduced efficiency. While magnetic coupling components can enhance VCR, they introduce drawbacks such as reduced power rating and leakage current. To overcome these challenges, this paper proposes the flying capacitor boost converter (FCBC) as an alternative for PV systems. We analyze the performance of CBCs, FCBCs, and multilevel boost converters through MATLAB/SIMULINK simulations. The results demonstrate that the FCBC achieves a significantly higher VCR, requiring a smaller inductor size and potentially exhibiting a smoother output voltage compared to the CBC. Furthermore, the paper explores the trade-offs in complexity and cost associated with the FCBC, highlighting its advantages for high-voltage applications. Future research will focus on a comprehensive analysis of efficiency, control complexity, and the scaling of FCBCs to higher levels.
Keywords
Voltage conversion ratio (VCR); Conventional boost converter (CBC); Multilevel boost converter; Flying capacitor boost Converter (FCBC); Photovoltiac system (PV); Three-level boost converter

References
Lakshmi Praba, R. Seyezhai, N. B. Muthuselvan, and S. Harika, “Topology evaluation of high gain DC-DC converters for photovoltaic application,” Int J Ind Electron Electr Eng, vol. 7, no. 11, 2019. Perez, L. G. A. Rodrigues, and A. Bier, “Full-SiC Flying Capacitor Boost Converter for 1500 V multi-string PV inverter,” in 2021 23rd European Conference on Power Electronics and Applications (EPE’21 ECCE Europe), IEEE, 2021, p. P-1. BAYLISS, Roderick S.; BROOKS, Nathan C.; PILAWA-PODGURSKI, Robert CN. A combined power factor correcting and active voltage balancing control technique for buck-type ac/dc grid-tied flying capacitor multilevel converters. In: 2023 IEEE 24th Workshop on Control and Modeling for Power Electronics (COMPEL). IEEE, 2023. p. 1-5.‏ E. Babaa, G. El Murr, F. Mohamed, and S. Pamuri, “Overview of boost converters for photovoltaic systems,” Journal of Power and Energy Engineering, vol. 6, no. 4, pp. 16–31, 2018. Bendaoud et al., “Implementation of fuzzy logic controller (FLC) for DC-DC boost converter using Matlab/Simulink,” Int. J. Sensors Sens. Networks, Spec. Issue Smart Cities Using a Wirel. Sens. Networks, vol. 5, no. 5–1, pp. 1–5, 2017. Keyhani and H. A. Toliyat, “Flying-capacitor boost converter,” in 2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC), IEEE, 2012, pp. 2311–2318. Nishanta and V. U. P. Lavanya, “Analysis of Flying Capacitor Boost Converter,” 2022, Forex Publication. doi: 10.37391/ijeer.100315. Pesantez, F. Rodriguez, H. Renaudineau, S. Rivera, and S. Kouro, “Buck-Boost Flying Capacitor DC-DC Converter for Electric Vehicle Charging Stations,” in 2023 IEEE 17th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG), IEEE, 2023, pp. 1–6. Bin Ponniran, K. Orikawa, and J. Itoh, “Minimum Flying Capacitor for N-Level Capacitor DC/DC Boost Converter,” IEEE Trans Ind Appl, vol. 52, no. 4, pp. 3255–3266, Jul. 2016, doi: 10.1109/TIA.2016.2555789. MANDAL, Sunil; PRABHAKARAN, Prajof. A Design and Implementation of a Novel Multi-Stage Ultra High Gain DC-DC Converter with Boost Cell Network. In: 2023 IEEE 2nd Industrial Electronics Society Annual On-Line Conference (ONCON). IEEE, 2023. p. 1-6.‏ Hashim, A. Fahem, Issam Jassim “A study for conversion of mechanicalcontrol system to electrical control system”, DJES, vol. 5, no. 1, pp. 88– 102, Jun. 2012.https://doi.org/10.24237/djes.2012.05108 D. H. Almawlawe, “An approach to design of digital sliding mode control for DC-DC converters,” 2018, Универзитет у Нишу, Електронски факултет. J. Watkins and L. Zhang, “Multilevel space vector PWM control schemes for a flying-capacitor inverter,” in Second International Conference on Power Electronics, Machines and Drives (PEMD 2004)., IET, 2004, pp. 12–17. ROSAS-CARO, Julio C., et al. A Multilevel Boost Converter with Reduced Inductor Current. Electronics, 2023, vol.12, no.22: 4585.‏ https://doi.org/10.3390/electronics12224585 Zhou, A. Pietkiewicz, and S. Cuk, “A three-switch high-voltage converter,” IEEE Trans Power Electron, vol. 14, no. 1, pp. 177–183, 1999. C. Mayo-Maldonado, J. E. Valdez-Resendiz, J. C. Rosas-Caro, R. Salas-Cabrera, E. N. Salas-Cabrera, and H. Cisneros-Villegas, “A contribution to the dynamic modeling of switched-capacitor converters,” in 2011 IEEE Energy Conversion Congress and Exposition, IEEE, 2011, pp. 1284–1290. Esteki, S. A. Khajehoddin, A. Safaee, and Y. Li, “LED Systems Applications and LED Driver Topologies: A Review,” 2023, Institute of Electrical and Electronics Engineers Inc. doi: 10.1109/ACCESS.2023.3267673. Pallo, S. Coday, J. Schaadt, P. Assem, and R. C. N. Pilawa-Podgurski, “A 10-level flying capacitor multi-level dual-interleaved power module for scalable and power-dense electric drives,” in 2020 IEEE Applied Power Electronics Conference and Exposition (APEC), IEEE, 2020, pp. 893–898. ELSAYAD, Nour; MORADISIZKOOHI, Hadi; MOHAMMED, Osama. A New Three-Level Flying-Capacitor Boost Converter with an Integrated LC 2 D Output Network for Fuel-Cell Vehicles: Analysis and Design. Inventions, 2018, vol.3, no.3, 61.https://doi.org/10.3390/inventions3030061 Sadeghi, M. Khederzadeh, and M. Agha Shafiyi, “A Grid-connected PV Power Supply based on Flying Capacitor multicell converter with modified MPPT based Control for Active Power Filtering,” Iranian Journal of Power Engineering, vol. 1, no. 1, pp. 41–46, 2016. Bin Ponniran and M. A. N. Bin Kasiran, “Parameters design evaluation in 3-level flying capacitor boost converter,” in ISCAIE 2017 - 2017 IEEE Symposium on Computer Applications and Industrial Electronics, Institute of Electrical and Electronics Engineers Inc., Oct. 2017, pp. 195–199. doi: 10.1109/ISCAIE.2017.8074976. Ponniran, K. Matsuura, K. Orikawa, and J. I. Itoh, “Size reduction of DC-DC converter using flying capacitor topology with small capacitance,” IEEJ Journal of Industry Applications, vol. 3, no. 6, pp. 446–454, 2014. doi: 10.1541/ieejjia.3.446.
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